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Start ShoppingMIKUNI FN224103-55 Bleed Pilot Jets - High-Performance Fuel System Component for Powersports Engines
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Description
Upgrade your powersports engine's fuel system with MIKUNI's FN224103-55 Bleed Pilot Jets. These critical components ensure precise fuel metering for smooth throttle response and consistent power delivery across a range of riding conditions.
Key Features
- Precision Engineering: Meticulously crafted to match original equipment specifications for accurate fuel flow control.
- Material Quality: Durable brass construction resists corrosion and maintains performance in harsh environments.
- Compatibility: Designed for direct use with MIKUNI carburetor systems on motorcycles, ATVs, and UTVs.
- Easy Installation: Streamlined design simplifies replacement without requiring complex adjustments.
Why Choose This Product
Whether you're tuning for racing or daily riding, these bleed pilot jets deliver reliable fuel delivery that enhances engine efficiency. Their precision engineering ensures consistent performance, while the corrosion-resistant materials extend service life. Riders will notice smoother acceleration and better fuel economy with this essential carburetor component.
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Upgrade your powersports engine's fuel system with MIKUNI's FN224103-55 Bleed Pilot Jets. These critical components ensure precise fuel metering for smooth throttle response and consistent power delivery across a range of riding conditions.
Key Features
- Precision Engineering: Meticulously crafted to match original equipment specifications for accurate fuel flow control.
- Material Quality: Durable brass construction resists corrosion and maintains performance in harsh environments.
- Compatibility: Designed for direct use with MIKUNI carburetor systems on motorcycles, ATVs, and UTVs.
- Easy Installation: Streamlined design simplifies replacement without requiring complex adjustments.
Why Choose This Product
Whether you're tuning for racing or daily riding, these bleed pilot jets deliver reliable fuel delivery that enhances engine efficiency. Their precision engineering ensures consistent performance, while the corrosion-resistant materials extend service life. Riders will notice smoother acceleration and better fuel economy with this essential carburetor component.
| SKU | GM98E641F9 |
|---|---|
| MPN | FN224103-55 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Models with Mikuni VM/PF/BS carburetors (e.g., Honda XR/CRF, Yamaha YZ/WR, Kawasaki KX/KLX, Suzuki RM/DRZ) | 1980-2025 |
Frequently Asked Questions
The #55 refers to the calibrated bleed hole size for air metering; larger number = more air/leaner mixture.
No, Mikuni jets are not interchangeable with Keihin/PWK carbs due to different threading.
Often yes; pilot changes affect low-speed only - test and adjust main/needle for full range.
Fits both; common in VM series 2-stroke and BS/VM 4-stroke carbs.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet removal tool or needle nose pliers
Pro Tips
- Count turns on old jet to match initial position
- Use carb cleaner to flush before install
- Re-jet main and needle after pilot changes for full tune
Common Mistakes to Avoid
- Dropping tiny jet into carb body (use magnet or tray)
- Not cleaning seat before install
Comparison vs Stock/OEM
Direct OEM-equivalent replacement for worn factory pilots
Improvements
- Precision machined for consistent flow
- Corrosion resistant brass
- Enables precise tuning vs. clogged stock jets
Considerations
- Aftermarket identical to OEM specs; no performance gain without tuning
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance (until clogged by dirt/varnish)
Warranty
Limited manufacturer warranty (defects only)
Maintenance
Clean with carb cleaner during annual service; replace if deformed
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